Flow behaviour and microstructure evolution in novel SiO2/PP/LCP ternary composites: Effects of filler properties and mixing sequence

Mun Wai Lee; Xiao Hu; Lin Li; Chee Yoon Yue; Kam Chiu Tam

doi:10.1002/pi.1098

Flow behaviour and microstructure evolution in novel SiO₂/PP/LCP ternary composites: Effects of filler properties and mixing sequence

Mun Wai Lee
, Xiao Hu
, Lin Li
, Chee Yoon Yue
, Kam Chiu Tam

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

Abstract

When silica (SiO₂) fillers were introduced into the polypropylene (PP) and liquid-crystalline polymer (LCP) blend, it was found that the mixing sequence, the filler size, and the filler surface nature affected the rheology of the composites and the morphology of the LCP phase in the ternary composite. In particular, the compatibility between the filler and the PP matrix was found to exert a strong influence on the droplet-fibril transition. The incorporation of the hydrophobic silica to the LCP/PP blend facilitated the fibrillation of LCP because the hydrophobic filler demonstrated affinity towards the hydrophobic PP matrix. The preferential residence of the hydrophobic silica in the PP phase would minimise the LCP domain disruption leading to the formation of LCP fibrils with high aspect ratios. The use of fine filler and in situ blending, which promoted the filler-LCP interaction, could prevent coalescence, inhibit deformation and hinder fibril development as well. © 2003 Society of Chemical Industry.

Original language	English
Pages (from-to)	276-284
Journal	Polymer International
Volume	52
Issue number	2
DOIs	https://doi.org/10.1002/pi.1098
Publication status	Published - Feb 2003
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Blends
Fillers
Liquid crystalline polymer(LCP)
Mixing sequence
Morphology
Nano-particles
Polypropylene
Rheology
Tenery composites

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Cite this

@article{d927b901a44c48d3b5a69bda743ff0c3,

title = "Flow behaviour and microstructure evolution in novel SiO2/PP/LCP ternary composites: Effects of filler properties and mixing sequence",

abstract = "When silica (SiO2) fillers were introduced into the polypropylene (PP) and liquid-crystalline polymer (LCP) blend, it was found that the mixing sequence, the filler size, and the filler surface nature affected the rheology of the composites and the morphology of the LCP phase in the ternary composite. In particular, the compatibility between the filler and the PP matrix was found to exert a strong influence on the droplet-fibril transition. The incorporation of the hydrophobic silica to the LCP/PP blend facilitated the fibrillation of LCP because the hydrophobic filler demonstrated affinity towards the hydrophobic PP matrix. The preferential residence of the hydrophobic silica in the PP phase would minimise the LCP domain disruption leading to the formation of LCP fibrils with high aspect ratios. The use of fine filler and in situ blending, which promoted the filler-LCP interaction, could prevent coalescence, inhibit deformation and hinder fibril development as well. {\textcopyright} 2003 Society of Chemical Industry.",

keywords = "Blends, Fillers, Liquid crystalline polymer(LCP), Mixing sequence, Morphology, Nano-particles, Polypropylene, Rheology, Tenery composites",

author = "Lee, \{Mun Wai\} and Xiao Hu and Lin Li and Yue, \{Chee Yoon\} and Tam, \{Kam Chiu\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2003",

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doi = "10.1002/pi.1098",

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journal = "Polymer International",

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T1 - Flow behaviour and microstructure evolution in novel SiO2/PP/LCP ternary composites

T2 - Effects of filler properties and mixing sequence

AU - Lee, Mun Wai

AU - Hu, Xiao

AU - Li, Lin

AU - Yue, Chee Yoon

AU - Tam, Kam Chiu

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2003/2

Y1 - 2003/2

N2 - When silica (SiO2) fillers were introduced into the polypropylene (PP) and liquid-crystalline polymer (LCP) blend, it was found that the mixing sequence, the filler size, and the filler surface nature affected the rheology of the composites and the morphology of the LCP phase in the ternary composite. In particular, the compatibility between the filler and the PP matrix was found to exert a strong influence on the droplet-fibril transition. The incorporation of the hydrophobic silica to the LCP/PP blend facilitated the fibrillation of LCP because the hydrophobic filler demonstrated affinity towards the hydrophobic PP matrix. The preferential residence of the hydrophobic silica in the PP phase would minimise the LCP domain disruption leading to the formation of LCP fibrils with high aspect ratios. The use of fine filler and in situ blending, which promoted the filler-LCP interaction, could prevent coalescence, inhibit deformation and hinder fibril development as well. © 2003 Society of Chemical Industry.

AB - When silica (SiO2) fillers were introduced into the polypropylene (PP) and liquid-crystalline polymer (LCP) blend, it was found that the mixing sequence, the filler size, and the filler surface nature affected the rheology of the composites and the morphology of the LCP phase in the ternary composite. In particular, the compatibility between the filler and the PP matrix was found to exert a strong influence on the droplet-fibril transition. The incorporation of the hydrophobic silica to the LCP/PP blend facilitated the fibrillation of LCP because the hydrophobic filler demonstrated affinity towards the hydrophobic PP matrix. The preferential residence of the hydrophobic silica in the PP phase would minimise the LCP domain disruption leading to the formation of LCP fibrils with high aspect ratios. The use of fine filler and in situ blending, which promoted the filler-LCP interaction, could prevent coalescence, inhibit deformation and hinder fibril development as well. © 2003 Society of Chemical Industry.

KW - Blends

KW - Fillers

KW - Liquid crystalline polymer(LCP)

KW - Mixing sequence

KW - Morphology

KW - Nano-particles

KW - Polypropylene

KW - Rheology

KW - Tenery composites

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U2 - 10.1002/pi.1098

DO - 10.1002/pi.1098

M3 - RGC 21 - Publication in refereed journal

SN - 0959-8103

VL - 52

SP - 276

EP - 284

JO - Polymer International

JF - Polymer International

IS - 2

ER -